Which reasons explain the failure of the League of Nations? Select two options.
1. The League of Nations was not authorized by the Treaty of Versailles.
2. President Wilson did not support the creation of the League of Nations.
3. The League of Nations was created by the unpopular Treaty of Versailles.
4. The United States was unable to convince any other nations to join the league.
5. The US Senate did not allow the US to become involved in the League of Nations.